when and where is first occurence of word "zap"?

when and where is first occurence of word "zap" ? Online Etymology dictionnary mentions comic strip Buck Rogers but without any precise date or quotation

Solution 1:

The term earliest appearance appears to be from 1929 as a noun. The comic strips “Buck Rogers in the Twenty-Fifth Century" were published from 1929 to 1967 and, apparently, used the term quite often.

Zap: (noun)

(orig. US) an excl. used to describe the force of a sudden impact:

1929 P.F. Nowlan in Wash. Post 7 May 16/3: Ahead of me was one of those golden dragon Mongols, with a deadly disintegrator ray... Br-r-rr-r-z-zzz-zap.

Zap: (verb)

(orig. US milit.) to kill, to defeat.

1942 [US] Berrey & Van den Bark - The American Thesaurus of SlAng.

(GDoS)

Here is a strip from 1933 where the term zap as a verb is used:

From (rolandanderson.se)